Variable friction and multi-texture mouse

A mouse, comprising:

• a housing being circular about a central axis and defining:
• an aperture;
• and
• a lower surface;
• and
• a foot movable between a first position and a second position;
• a touch sensor;
• and
• an electrical coupling between the touch sensor and a processor,
• wherein:
• with the foot in the first position, the lower surface defines a bottom-most surface of the mouse;
• with the foot in the second position, the foot extends through the aperture and defines a bottom-most surface of the mouse;
• and
• the processor is configured to determine an intended orientation of the housing based on a hand position of a user detected by the touch sensor while the foot is in the second position.

An input device, comprising:

• a first condition having a first sliding resistance on a surface;
• a second condition having a second sliding resistance on the surface, the second sliding resistance being different than the first sliding resistance;
• an actuator to selectively switch the input device from the first condition to the second condition;
• and
• an input sensor to detect input from a hand of a user grasping the input device;
• wherein the actuator is configured to selectively switch between the first condition and the second condition according to a texture pattern, the texture pattern being dependent on the position of the input device relative to a support surface.